// Copyright (c) 2023 Huawei Device Co., Ltd.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use std::fmt::{Display, Formatter};

#[derive(Debug)]
pub enum Error {
    TrySend(String),
    Recv(String),
    CreateRuntime(String),
    CreateThread(String),
    InvalidTime,
    InvalidPriority,
    Closed,
}

impl Error {
    fn as_str(&self) -> &str {
        match self {
            Error::TrySend(s)
            | Error::Recv(s)
            | Error::CreateRuntime(s)
            | Error::CreateThread(s) => s.as_str(),
            Error::InvalidTime => "invalid time",
            Error::InvalidPriority => "invalid priority",
            Error::Closed => "receiver already closed",
        }
    }
}

impl Display for Error {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", self.as_str())
    }
}

impl std::error::Error for Error {}
